You do seem to be very interested in the piezo-electric effect. That's good, anyway. Rather than getting your information from quacks, I suggest you go to some real sources:

The short version of it is that quartz (and many other crystals) will vibrate along one axis when you provide an electric field. There is no magic source of energy involved - it gets the energy for the vibrations from the electric source you provide. The thickness of the quartz crystal determines the frequency. The width of the crystal determines diffraction effects.

(My own experience with quartz and the piezo-electric effect is with the ultrasonic quartz transducers I've designed (and had made by a commercial firm) and used in my ultrasonic studies of other materials.)

If emotions could change the frequency of quartz, then all watches based on a quartz movement would be too unreliable to tell time with. Someone has been lying to you and you've been eating out of their palm.

If emotions could change the frequency of quartz, then all watches based on a quartz movement would be too unreliable to tell time with. Someone has been lying to you and you've been eating out of their palm.

I think it's more than that. I think an entire cult has been growing centered around this idea that quartz and other crystals (but only the pretty crystals. No mention of crystalline iron nor sodium nor dull metals.) can do magic. People seem to want to do magic just like in Tolkien or Harry Potter or Marion Zimmer Bradley, and will create their own religion around it.

(Bradley's crystals did magic. But did Tolkien or Potter even mention crystals?)

I don't understand why they're not very interested in some of the wondrous things those crystals really can do, though. Nor why they look at leaded glass and say "crystal" - even though it's not a crystal - and ignore the wondrous things glasses can do.

I never said it was a reputable source, I'm here trying to find out if there's any truth in it.

The statement I quoted was false regarding Si, true regarding water. As you are, ahem, "researching" quartz, a sources that gives false statements regarding one of the basic elements of which quartz is composed should not be trusted at all.

Mostly because I've read many books and articles discussing the supposed abilities that quartz possesses, and in my opinion the article provided a reasonable scientific explanation for some of these claims.

Mostly because I've read many books and articles discussing the supposed abilities that quartz possesses, and in my opinion the article provided a reasonable scientific explanation for some of these claims.